hook_preprocess and hook_preprocess_hook functions in Drupal 8

In this video, we are going to take a look at hook_preprocess and hook_preprocess_hook functions in Drupal 8. With hook_preprocess we are going to find an interesting specific hook and then we are going to implement it and play with it.

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The instructions from drupal.org
https://www.drupal.org/docs/develop/u...

The package that we used in this video:
https://www.drupal.org/docs/develop/u...

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